Cover for feeders for ingot molds



B. H. HVVARD ET AL.

COVER FOR FEEDERS FOR INGOT MOLDS Fu@ Anni 2.4.

1924 2 Sheets-Sheet 1 .Suhl f8 392% COVER FOR FEEDERS FOR INGOT MOLUS 2Sheets-Shen 2 Filed April 24 1924 Patented duly i924.

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' `LBL@0311191179111) E. HOWARD, OF WSHINGTQN, DISTRICT OF COLUMBLA,'AND ERNEST J,-

TURNER, F PITTSBURGH. PENNSYLVANSX.

cover. ron rnnnnns Fon meer norms.

Appicstionviiled pril 24, 192%. Serial No. 708,683.

To ail whom it may concern.' v

Beit known that BLooMFIELn H. HOWARD and ERNEST J. TURNER, citizens ofthe l United States, residing; respectively, at e 41ililashington,Districtl of Columbia, and

Pittsburgh, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Covers for Feeders forin ot Molds, of which the lo following' is a speci cation.

Uur invention relates to improvements in covers for feeders for ingotmolds.

The object of our invention is to provide a cover for feeders adapted torest upon the upper end of the feeder and to retain the heat in thefeeder and yet allow the passage of the gases from the feeder, wherebythe heat is retained in the upper end of the mold to prevent theformation of what is known as piping and redure segregw tion.

Another object of our invention is to provide a cover of this characterwhich' can he readily applied to any feeder and which will he properlyretained on the upper end of the feeder during the coolingr process.

A further obiectof our invention is to provide a simple cheap andedective cover of this character having certain details of structure andcombination of parts herein.vv after more fully set forth.

'in the accompanying drawings Figure l is a perspective view of auinfrot mold showingf a lfeeder thereon having our improved cover appliedthereto.

Figure 2 is a vertical transverse sectional view of Figure 1.

Figure 3 is a' vertical transverse sectional View similar to Figure i?showing a modified .form of cover.

Figure is a plan view of cover showing' a singleLopening thereto.

Figure 5 is a view similar to Figure 4 showing a single rectangularopening` therein.

Figure t is a transverse sectional view of the cover showing a slightlymodified form.

Figure 7 is a vertical transverse sectional view showing; a modifiedforni of interlocko. ing between the upper end of the feeder and thecover.

Figure S is a vertical sectional view similar to Figure 7 showinganother modified forni of means for retaining the cover on ,the feeder.y

Figure v9 is a vertical sectional view similar to Figures 'i' and 8showing a still zfnir` `ings. the upper end of the feeder isperfectlyfiat and our 4improved cover coinprises a plate 4 preferablyof refractorna. terial and of a thickness approximate y the saine as that ofthe'walls of the feeder.'

Theplate i is of a size so as to completely close the hoi-e of the'feeder and r st i1 on the upper dat edges `of the feeder an is providedwith a series of openings 5 to allow the escape of gases and yet toretain the heat which' wouldotherwise pass ofi' 'to the atmosphere.

ln ligure 3 the' upper end of the feeder 6 is cut a\va \v as indicatedat 7 forming an annular flange on the innerwvall and the cover S is of aysize to fit within the feeder and rest upon the flange. B v thisstructure it will he seen that the cover isheld Within the feeder andcould not p issihiy,move out of position before the ingot is thoroughlycooled. r l v in Figure 4 the cover?) is provided with a single ovalopening' l0 to allow the escape ofthe gases. Figure 5' shows the rover1l provided with a square opening; 12 to allow the escape of gasses. r

in Figure tithe cover i3 has its lower face concave as indicated at 14and provided with a series of openings. l5 which allow 'a more readyescape of the gases from the feeder and yet retain the greater portionof the heat.

ln Figure 7 of the drawings the upper end of the feeder iti is beveledas indicated at "il" and the cover 18 is provided with correspondinglybeveled edges 19 whereby the cover tightly fits within the upper endofthe feeder and is prevented from moving on the feeder.

Figure '8 Ashows the upper end of the feeder beveled in the oppositedirection from that shown in Figure 7 as indicated at 21 and the cover22 is providedl around its outer ed es with the downwardly beveledflange 23 w ich engages the beveled wall 21 of the feeder and locks thecover dn the feeder against lateral movement. cover is provided withopenings 24 toallow the escapevof gases from the feeder."

yIn Figure 9 the'feeder 25' has its upper end perfectly .flat like thatshown in Figures 1\and 2 of thedrawings and the cover 26 is' provided onits outer edges with'the downthe feeder.

wardly extending flanges 27 which extend down along the outer face ofthe feeder 25.

i extends into the `bore of the feeder and which engages the inner wallof the feeder, thus preventing the cover from sliding off of the feeder.Thisconstruction also provides 'a 'greater amount of refractory materialand would retain the heat more effectively. In this'form, the feeder isprovided with a series of openings 32.

In the form shown in Figure 11 the feeder 33 is made precisely like thatshown in Fig-v ures 1, 2, 9 and 10 and the cover 3-'1 is made like thatshown in Figures l and 2 of the drawings except the same is not providedWith openings. In this form the cover completely closes the upper end ofthe feeder, but owing to slight imperfections in the, upper end of thefeeder and also in the lower face of the cover, sufficient space wouldbe provided ,forthe escape of gases. If this is not truelheggases willlift the cover slightly andr escape. and the covcr would again seatitself upon the feeder.

'While we have shown and described this specific Istructure it will beunderstood that 'what we claim is a broad idea of closing the upper endof the feeder by a cover of refractory material.

Having thus fully described our invention what we claim is l. A 4coverfor feeders for ingot molds comprising a vbody portion of refractorylThis` material adapted to rest upon the upper end of the mold and havingmeans for preventing lateral movement thereon. v

2. A cover for feeders for ingot molds (omprising a body portion made ofrefractory material resting upon the upper end of the mold and havingmeans for preventing lateral movement ou the feeder and having means forallowing the gas to escape from the feeder.

A cover for feeders for ingot molds comprising a body portion adapted torest upon theupper end of the feeder and interlocking therewith toprevent lateral movement thereon and having means to allow the gas toescape from the feeder.

4. A cover for feeders for ingot molds comprising a body portion made ofrefractory material and having means for preventing lateral movementthereof on the feeder and having means-to allow the escape of gas fromthe feeder.

5. A cover for feeders for ingot molds comprising a body portion adaptedto close the upper end of thefceder and having means for allowing theescape of the gases from the feeder.

6. A cover for feeders for ingot molds comprising a body portion ofrefractory material adaptedY to rest upon the upper end of the feederand having means to allow the escape of gases from the feeder.

7. The combination with a hot top feeder of a cover constructed andarranged to be supported on the upper end of the feeder and close thesaine.

8. The combination with a feeder for in# got molds of a cover adapted tobe supported on the upper end of the feeder and close the same and holdagainst lateral displacement.

9. The combination with a feeder `for ingot molds of a cover adapted tobe supported by the upper end of the feeder and having means forallowing the escape of gases fromv the feeder. a 10. The combinationwith a `feeder for ingot molds ofwa cover adapted to be supported on thdyripper end of the mold and having means for allowing the escape ofgases from the feeder and means for preventin the cover from movinglaterally from t e feeder.`

bIn testimony whereof we affix our signatures.

BLooMEIEL-D H. HOWARD. ERNEST J: TURNER.

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